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用App Inventor 2做扫描仪App？从拍照到展示，手把手教你搭一套完整相机功...
...位址赋值给Image1.图片
核心积木拼法如下：
当 按钮_拍照.被点击 执行
调用 Camera1.拍照()
当 Camera1.拍摄完成(图像位址) 执行
设 图像_预览.图片 为 图像位址
设 标签_状态.文本 为 "照片已拍...
Why is 1/1/1970 the “epoch time”?
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Why am I getting tree conflicts in Subversion?
... I think adding SVN version information to the answer would be in order.
– Peter Mortensen
Dec 3 '16 at 9:06
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How to get orientation-dependent height and width of the screen?
I'm trying to programmatically determine the current height and width of my application. I use this:
11 Answers
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Is there any way I can define a variable in LaTeX?
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UTF-8 without BOM
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BOM or Byte Order Mark is sometimes quite annoying. Visual Studio does not change the file unless you save it (as Hans said).
And here is the solution to your problem:
If you want to save a file with other encodings select save as and ...
Measuring code execution time
I want to know how much time a procedure/function/order takes to finish, for testing purposes.
7 Answers
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Angular HttpPromise: difference between `success`/`error` methods and `then`'s arguments
...n by parallel, since JS is single-threaded? Do you mean that the execution order is non-deterministic?
– Derek
Mar 3 '15 at 20:12
2
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How to send a message to a particular client with socket.io
...e:
|id | name
|1 | Scott
|2 | Susan
"room" name will be "1-2" (ids are ordered Asc.) and on disconnect socket.io automatically cleans up the room
this way you send messages just to that room and only to online (connected) users (less packages sent throughout the server).
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What's Up with Logging in Java? [closed]
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In chronological order of api apperance (as far as I know):
Log4j because most everybody uses it (in my experience)
Commons Logging because open source projects use it (so they can integrate with whatever logging framework is used in the in...